How often do you crack your knuckles?

Nothing wrong with cracking knuckles. I love how it feels. On a daily basis, multiple times.
 
(Also, that should be inadvertently, not indavertendly. I've got no idea what happened.)

Not my knuckles but more my fingers.
 
Holding a controller for long periods does that to me =(

Every few hours. I crack my toes and ankles too. 

I can crack my ankle over and over and over and over and over. I don't think its healthy but I find it entertaining to see other peoples reactions.

My hands are too weird to be able to do that. I don't get why I can't crack my knuckles.

Probably once a week, whenever my hands feel stiff. 
 
Also, I pop my jaw pretty often, usually in the middle of talking.  My jaw is all messed up and locks up for a split second every now and then.  I should probably have a doctor check it out at some point...  Meh.  Luckily, there's no visual side to it, so it doesn't come off as some kind of twitch, and I'm usually the only one that notices. 
 
Also also, I crack my neck rather often, on purpose...  Very relaxing.  People say it's bad for your neck, but again...  Meh.

Not too often. I crack my neck and back a lot though. It gets pretty annoying.

" I can crack my ankle over and over and over and over and over. I don't think its healthy but I find it entertaining to see other peoples reactions. "

I crack mine multiple times a day. I use to buy that lie about it being bad for you, but my grandmother's been doing it for 60+ years and she doesn't have arthritis. My grandpa who never does it has arthritis bad. I don't think there's a correlation.

Knuckles, Fingers, Toes, Ankles, Neck & Back
All daily.

Never - I simply see no point in doing it.

" I can crack my ankle over and over and over and over and over. I don't think its healthy but I find it entertaining to see other peoples reactions. "

Over and over and over and over. If it gives arthritis - I'm Screwed.
It's weird.. does it actually give people arthritis? I recall reading one article that says it does, and another one that says cracking your knuckles is pretty much a 'fart for you joints' and that it's good for you.

I do it way too much. Sometimes when bored in class I will start doing it cracking all of my fingers.

On a daily basis, multiple times is a bit of an understatement. I crack my neck a few times a day. I crack my knuckles a few times an hour.

I avoid it at all costs.  Nothing makes me more mad than seeing somebody do it like it looks cool.  Like the part in Mass Effect 2 where Shepard cracks his knuckles in a fist to show how strong he is.  I just about reloaded and picked another option because I didn't want my Shep to do that.  The neck bothers me even more though... when people do that like it is cool... I just cross my fingers they accidentally snap their own neck. 
 
Sometimes it just happens, but I avoid it otherwise.

No - there's no health risk. It's actually beneficial. It allows more synovial fluid into the cavity. That's actually why we're able to crack our knuckles - or, according to some of the posts above, every other part of your body - at all, because there's not enough synovial fluid. Synovial fluid, by the way, is there to stop the bones rubbing up against each other (or so I understand). So theoretically by NOT cracking your knuckles you're more likely to get arthritis. Word.

Every goddamn time I get the chance. 
It's a damn addiction.

Fingers, Knees, ankle, shoulder, I crack everything all the time.

" No - there's no health risk. It's actually beneficial. It allows more synovial fluid into the cavity. That's actually why we're able to crack our knuckles - or, according to some of the posts above, every other part of your body - at all, because there's not enough synovial fluid. Synovial fluid, by the way, is there to stop the bones rubbing up against each other (or so I understand). So theoretically by NOT cracking your knuckles you're more likely to get arthritis. Word. "

I do every time my hands my wrist or neck feel stiff
Which usually is every day, multiple times since I use a computer for long periods of time
 
I really don't understand why some people are freaked out by it
Or say it's a "bad habit"

I do it multiple times every day. It's a bad habit.

"Not my knuckles but more my fingers.  Holding a controller for long periods does that to me =("

Every part of my body every minute multiple times

i use to crack my knuckles all the time. for some reason i stopped cracking them.

I crack my knuckles and the middle joints of my fingers about once every hour or so, and I crack my back about once a day.

Usually a few times a day, although for some reason my thumb clicks every time I bend it.

It's mostly fingers here. Typing, controller holding, that'll do it. I'll crack my toes and elbows when I wake up, but the rest of the day it's all fingers.
 
I don't really crack them with the hand-on-fist method, though. I kind of use my other hand to move my fingers in like...a wave? It's tough to describe, but it gets the job done.

I used to do it a lot when I was younger, but I broke that habit several years ago. Reading this thread is giving me an urge to do it dammit.

" Fingers, Knees, ankle, shoulder, I crack everything all the time. "